Razor blades



July 26, 1966 H. F. TOMEK RAZOR BLADES Filed April 6, 1964 Flqa FIGS 35Wwf/V6 7,

United States Patent O 3,262,206 RAZOR BLADES Harry F. Tomek, 4524Tennessee, St. Louis 11, Mo. Filed Apr. 6, 1964, Ser. No. 357,603 1Claim. (C1. 30-346) This invention relates to razor blades adapted to beused in stacked relation to provide plural cutting edges.

Advantages in plural cutting edges in shaving have been recognized formany years (cf. Patents No. 869,748, Steinharter, 939,400, Diebel,941,231, Cupelli, 1,024,509, Harrison, 1,633,139, Staats-Gels,1,911,378, Martin, 1,920,711, Pelizzola, 2,044,698, John, 2,658,271,Bronish and 2,741,839, Hulverscheidt, among others).

Heretofore, however, the means proposed for providing such cuttingsurfaces have presented certain practical diiculties, chiefly inrequiring special blade holders for conventional blades or else specialblades, most of which were not adapted for use with conventional holdersor to use as single edge-presenting blades.

One of the objects of this invention is to provide a razor blade whichcan be used interchangeably with conventional blades and in conventionalrazor blade holders to present either a single edge or a plurality ofedges of various spacings, which is inexpensive to manufacture andeffective in use.

Other objects will become apparent to those skilled in the art in thelight of the following disclosure and accompanying drawing.

In accordance with this invention, generally stated, a razor blade isprovided with a plastic spacer bonded to the blade in such a way as topermit the blades use in a conventional razor blade holder eithersingly, as a conventional blade, or in conjunction with `other blades ofthis invention or with conventional blades, to expose a plurality ofedges for use. In still another embodiment, a double edge-presentingblade is provided for use in injection type single edged razors.

In the drawing, FIGURE 1 is a View in perspective of a conventionalrazor blade holder provided with razor blades of this invention;

FIGURE 2 is a fragmentary sectional view taken along line 2-2 of FIGURE1;

FIGURE 3 is an exploded view, in side elevation, of the razor shown inFIGURES l and 2;

FIGURE 4 is a view in perspective of one embodiment of blade of thisinvention;

FIGURE 5 is a sectional View taken along the line 5 5 of FIGURE 4;

FIGURE 6 is a View in side elevation of the blade shown in FIGURES 4 and5, showing its use with two conventional blades indicated in dottedlines;

FIGURE 7 is a view in side elevation of another embodiment of blade ofthis invention with a single spacer element showing its use with oneconventional blade indicated in dotted lines;

FIGURE 8 is a View in side elevation of two blades of the sameconstruction as the bottom blade in FIGURE 7, one of which is shown indotted lines to illustrate another possible combination;

FIGURE 9 is a view in side eleva-tion showing a blade of the type shownin FIGURE 4, with a conventional blade in dotted lines on one side, anda -blade of the type shown in FIGURE 7 on the other, also in dottedlines;

FIGURE 10 is a fragmentary View in perspective showing still anotherembodiment of blade of this invention in an injection type razor bladeholder;

FIGURE 11 is a view in perspective of the `compound blade shown inFIGURE l0; and

FIGURE 12 is a sectional View taken along the line 12-12 of FIGURE 11.

ICC

Referring now to the drawing and particularly to FIG- URES l-3, 7 and 8for one illustrative embodiment of this invention, reference numeral 1indicates a conventional double-edged razor blade holder with a handle2, a blade platform 3 and a blade clamp 4. The blade clamp 4 can be madein any conventional way. In this embodiment, it is shown as a one-piecetransversely curved plate with an externally threaded stud 5 projectingfrom its concave face. The stud 5 is removably received into aninternally threaded socket 6 in the end of the handle. In the embodimentshown in FIGURES 1-3, two blades 10 are clamped in stacked relation inthe holder.

Each of the blades 10 has a band of plastic 15 bonded to one side faceof the blade. The thickness of the plastic band 15, and its width, is ofgreat importance. Preferably, the thickness of the band is in the rangeof .003 of an inch to .012 of an inch. The width of the band 15 must besuch as to ensure that the clamp does not act to reduce the desiredspacing between blade edges when the blades are stacked and clamped, andto ensure that the pressure of the clamp is exerted on the lower bladeas well as the upper blade.

It `can be seen that the plastic 15 must be suiciently resilient toaccommodate the forces of tension and compression which will be exertedupon it when the normally at blade is clamped in a transversely arcuateposition. At the same time, the plastic must be suciently rigid towithstand the compressive force of the clamp, However, with the broadsurface area provided, this latter requirement is not at all diicult.Numerous suitable plastics are available and in common use. The epoxyresins used in coating stator cores, polyethylene, certain polyurethanesand the like are well known.

As shown in FIGURES 4-6, a band 25 can be provided on each at face of ablade 20. In this embodiment, it is preferable that the blade 20 beprovided with holes 26, through which the bands 25 are bonded to oneanother as well as to the blade 20.

As can be seen from FIGURES 1-3 and 6 9, various combinations of two ormore blades can be achieved. For example, a conventional blade 35 can beused in conjunction with a blade 10 or a blade 20 or a blade 20 with ablade 10 to achieve a spacing only half of that to be achieved by theuse of two double banded blades 20. With a double banded blade 20 and asingle banded blade 10, either spacing can be achieved.

In the embodiment shown in FIGURES 10-12, two single edged blades 40 ofthe injector type are permanently bonded together with a plastic band45. This arrangement permits the injection of the double blade 40,merely by providing an injector arm of suicient thickness to spread theupper and lower blade clamping plates sufciently to accommodate thecompound blade. For those types of single edged blades which are not ofthe injector variety, a construction of blade analogous to the doubleedged blade shown in FIGURES l through 9 can be used.

Numerous variations in construction of the blades of this invention,within the scope of the appended claims will become apparent to thoseskilled in the art in the light of the foregoing description andaccompanying drawings.

Having thus described the invention, what is claimed and desired to besecured by Letters Patent is:

A razor blade adapted to provide with at least one other blade a pluralcutting edge comprising a generally flat double-edged razor blade and aplastic band bonded to each of the opposite dat faces of said blade,inboard of said edges and parallel therewith, said bands being bonded toone another through holes in said blade, each of said plastic bandshaving a thickness bet-Ween .003 and .012 inch.

(References on following page) o L References Cited by the ExaminerFOREIGN PATENTS 684,234 3/1930 France. UNITED STATES PATENTS 772,5324/1957 Great Britain.

2,313,818 3/1943 Gaisman. l l 2,833,340 5/1958 Shapiro 155 179 5 WILLIAMFELDMAN, Primary Exammel. 3,081,077 3/1963 Sudman 267-111 JAMES L.JONES, JR., Examiner.

